/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.pvm.runtime;

import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Tom Baeyens
 */
public class AtomicOperationTransitionCreateScope implements AtomicOperation {

    private static final Logger LOGGER = LoggerFactory.getLogger(AtomicOperationTransitionCreateScope.class);

    @Override
    public boolean isAsync(InterpretableExecution execution) {
        ActivityImpl activity = (ActivityImpl) execution.getActivity();
        return activity.isAsync();
    }

    @Override
    public void execute(InterpretableExecution execution) {
        InterpretableExecution propagatingExecution = null;
        ActivityImpl activity = (ActivityImpl) execution.getActivity();
        if (activity.isScope()) {
            propagatingExecution = (InterpretableExecution) execution.createExecution();
            propagatingExecution.setActivity(activity);
            propagatingExecution.setTransition(execution.getTransition());
            execution.setTransition(null);
            execution.setActivity(null);
            execution.setActive(false);
            LOGGER.debug("create scope: parent {} continues as execution {}", execution, propagatingExecution);
            propagatingExecution.initialize();

        } else {
            propagatingExecution = execution;
        }

        propagatingExecution.performOperation(AtomicOperation.TRANSITION_NOTIFY_LISTENER_START);
    }
}
